76390069 has 6 divisors (see below), whose sum is σ = 88861974. Its totient is φ = 65477160.

The previous prime is 76390063. The next prime is 76390079. The reversal of 76390069 is 96009367.

It can be written as a sum of positive squares in only one way, i.e., 58216900 + 18173169 = 7630^2 + 4263^2 .

It is a de Polignac number, because none of the positive numbers 2^k-76390069 is a prime.

It is a super-2 number, since 2×76390069² = 11670885283649522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76390063) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 779442 + ... + 779539.

It is an arithmetic number, because the mean of its divisors is an integer number (14810329).

Almost surely, 2^76390069 is an apocalyptic number.

It is an amenable number.

76390069 is a deficient number, since it is larger than the sum of its proper divisors (12471905).

76390069 is a wasteful number, since it uses less digits than its factorization.

76390069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558995 (or 1558988 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 40.

The square root of 76390069 is about 8740.1412459983. The cubic root of 76390069 is about 424.3057991106.

The spelling of 76390069 in words is "seventy-six million, three hundred ninety thousand, sixty-nine".